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Static and Dynamic Mathematical Modeling of a Micro Gas Turbine

Published online by Cambridge University Press:  29 January 2013

S. M. Hosseinalipour ,
E. Abdolahi  and
M. Razaghi
S. M. Hosseinalipour*
Affiliation:
CAE Center and DFC Lab., Faculty of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
E. Abdolahi
Affiliation:
CAE Center and CFD Lab., Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
M. Razaghi
Affiliation:
CAE Center and CFD Lab., Department of Mechanical Engineering, Iran University of Science and Technology, Tehran, Iran
*
*Corresponding author (alipour@iust.ac.ir)
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Abstract

This paper presents a static and linear dynamic model to simulate the performance of a Micro Gas Turbine (MGT). The static model is obtained using thermodynamic equations and maps of the components to determine off design performance of the MGT with constant output power. The linear dynamic model is developed using linearized static and dynamic nonlinear equations around an operating point as state-space model to predict the behaviour of the MGT in transient conditions. To validate the results of the static model, important information such as fuel flow, fuel to air ratio, and turbine inlet temperature are compared with the results of Aspen-HYSYS software during an increase in ambient temperature. In addition, static model results are compared with experimental data of the MGT test by previous studies. Also, the compressor equilibrium running line of the MGT is derived in constant ambient condition. In order to evaluate the linear dynamic model, the verification is performed using the results of nonlinear model of previous studies. The comparison between the results confirms the ability of proposed dynamic model to simulate a MGT while decreasing the computational effort and complexity of equations. Moreover, a comparison is carried out between static model results and steady state values predicted by dynamic model.

Keywords

Linear dynamic modelMicro Gas Turbine (MGT)Static modelSimulation

Information

Type
Articles
Information
Journal of Mechanics , Volume 29 , Issue 2 , June 2013 , pp. 327 - 335
Copyright
Copyright © The Society of Theoretical and Applied Mechanics, R.O.C. 2013 

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